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Intercomparison of cloud condensation nuclei and hygroscopic fraction measurements: Coated soot particles investigated during the LACIS Experiment in November (LExNo)

Snider, J. R.; Wex, H.; Rose, D.; Kristensson, A.; Stratmann, F.; Hennig, T.; Hennig, S.; Kiselev, A.; Bilde, M. and Burkhart, M., et al. (2010) In Journal of Geophysical Research 115. p.11205-11205
Abstract
Four cloud condensation nuclei (CCN) instruments were used to sample size-selected particles prepared at the Leipzig Aerosol Cloud Interaction Simulator facility. Included were two Wyoming static diffusion CCN instruments, the continuous flow instrument built by Droplet Measurement Technologies, and the continuous flow Leipzig instrument. The aerosols were composed of ammonium sulfate, levoglucosan, levoglucosan and soot, and ammonium hydrogen sulfate and soot. Comparisons are made among critical supersaturation values from the CCN instruments and derived from measurements made with a humidified tandem differential mobility system. The comparison is quite encouraging: with few exceptions the reported critical supersaturations agree within... (More)
Four cloud condensation nuclei (CCN) instruments were used to sample size-selected particles prepared at the Leipzig Aerosol Cloud Interaction Simulator facility. Included were two Wyoming static diffusion CCN instruments, the continuous flow instrument built by Droplet Measurement Technologies, and the continuous flow Leipzig instrument. The aerosols were composed of ammonium sulfate, levoglucosan, levoglucosan and soot, and ammonium hydrogen sulfate and soot. Comparisons are made among critical supersaturation values from the CCN instruments and derived from measurements made with a humidified tandem differential mobility system. The comparison is quite encouraging: with few exceptions the reported critical supersaturations agree within known experimental uncertainty limits. Also reported are CCN- and hygroscopicity-based estimates of the soot particles' solute fraction. Relative differences between these are as large as 40%, but an error analysis demonstrates that agreement within experimental uncertainty is achieved. We also analyze data from the Droplet Measurement Technologies and the two Wyoming static diffusion instruments for evidence of size distribution broadening and investigate levoglucosan particle growth kinetics in the Wyoming CCN instrument. (Less)
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Journal of Geophysical Research
volume
115
pages
11205 - 11205
publisher
American Geophysical Union
external identifiers
  • scopus:77953786492
ISSN
2156-2202
DOI
10.1029/2009JD012618
project
MERGE
language
English
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no
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e7d2e602-9c26-48ac-99f5-28dae418abf6 (old id 1671535)
date added to LUP
2010-09-17 13:29:11
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2018-05-29 11:00:58
@article{e7d2e602-9c26-48ac-99f5-28dae418abf6,
  abstract     = {Four cloud condensation nuclei (CCN) instruments were used to sample size-selected particles prepared at the Leipzig Aerosol Cloud Interaction Simulator facility. Included were two Wyoming static diffusion CCN instruments, the continuous flow instrument built by Droplet Measurement Technologies, and the continuous flow Leipzig instrument. The aerosols were composed of ammonium sulfate, levoglucosan, levoglucosan and soot, and ammonium hydrogen sulfate and soot. Comparisons are made among critical supersaturation values from the CCN instruments and derived from measurements made with a humidified tandem differential mobility system. The comparison is quite encouraging: with few exceptions the reported critical supersaturations agree within known experimental uncertainty limits. Also reported are CCN- and hygroscopicity-based estimates of the soot particles' solute fraction. Relative differences between these are as large as 40%, but an error analysis demonstrates that agreement within experimental uncertainty is achieved. We also analyze data from the Droplet Measurement Technologies and the two Wyoming static diffusion instruments for evidence of size distribution broadening and investigate levoglucosan particle growth kinetics in the Wyoming CCN instrument.},
  author       = {Snider, J. R. and Wex, H. and Rose, D. and Kristensson, A. and Stratmann, F. and Hennig, T. and Hennig, S. and Kiselev, A. and Bilde, M. and Burkhart, M. and Dusek, U. and Frank, Göran and Kiendler-Scharr, A. and Mentel, T. F. and Petters, M. D. and Poeschl, U.},
  issn         = {2156-2202},
  language     = {eng},
  pages        = {11205--11205},
  publisher    = {American Geophysical Union},
  series       = {Journal of Geophysical Research},
  title        = {Intercomparison of cloud condensation nuclei and hygroscopic fraction measurements: Coated soot particles investigated during the LACIS Experiment in November (LExNo)},
  url          = {http://dx.doi.org/10.1029/2009JD012618},
  volume       = {115},
  year         = {2010},
}